PREFERRED TRENDS IN UNDERGROUND GOLD PLACER MINING AND MINE SUPPORT IN PERMAFROST ZONE

The article gives the grounds for the increase in gold resources in the short term in the Far East Region of Russia by means of starting development of frozen buried residual placers in the north-eastern areas of earlier gold production for the purpose of replenishment of gold and foreign exchange reserves of the country. The background for large-scale re-extraction of gold-bearing minerals from previously assumed noncommercial sites beyond the limits of mined-out fields and from remnant pillars in abandoned placer mines is revealed. It is emphasized that re-extraction of such specific reserves require a special concept and efficient mining technologies, and the engaged mining companies need financial preferences to be granted. In the meanwhile, construction of new mines to develop such deposits is as likely as not in view of a number of reasons. Aiming to handle the most important issue of placer mine support, two methods of making artificial frozen rock pillars are proposed and their implementation is comprehensively described. The article highlights the opportunity to meet some environmental challenges through removal of previous gold mining waste from the ground surface, recovery of the past landscape and relief, organization of a complete cycle of hard geomaterials contained in waste and tailings, and synthesis of continuity in mining-disturbed subsoil.

Keywords

Deep-buried residual frozen placer blocks, permafrost zone, placer mine, gold production, re-extraction, stoping zone, underground excavations, geomaterials, waste dumps.

Issue number: 5
Year: 2018
ISBN:
UDK: 622:624.1
DOI: 10.25018/0236-1493-2018-5-0-49-58
Authors: Kiselev V. V., Khokholov Yu. A., Kaimonov M. V.

About authors: Kiselev V.V. (1), Candidate of Technical Sciences, Senior Researcher, e-mail: gtf@igds.ysn.ru, Khokholov Yu.A. (1), Doctor of Technical Sciences, Leading Researcher, e-mail: khokholov@igds.ysn.ru, Kaimonov M.V. (1), Candidate of Technical Sciences, Senior Researcher, e-mail: gtf@igds.ysn.ru, 1) Chersky Mining Institute of the North, Siberian Branch, Russian Academy of Sciences, 677000, Yakutsk, Russia.

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PREFERRED TRENDS IN UNDERGROUND GOLD PLACER MINING AND MINE SUPPORT IN PERMAFROST ZONE

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